Prakash Babu, State Yuva Morcha General secretary, was arrested here yesterday, they said.
Police, acting on a tip off, had boarded the train along with Babu at Vadakara. When the train reached Tirur, they told him he was being arrested. He was later taken to Kozhikode for questioning.
On October 29, Yuva morcha activists had vandalised the restaurant, alleging that immoral activities were being held there, prompting Facebook users to call for the programme to protest against the vandalism.
However the event turned out to be a damp squib as police detained the organisers and sympathisers, including women, even before they could reach the venue.